History of flu outbreaks

The first human has died from the H10N8 avian flu virus, which has only been detected in birds until now. Take a look at history's four main flu outbreaks.

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80 million people were ultimately vaccinated against H1N1, which minimized the impact of the illness. The CDC estimates that 43 million to 89 million people had H1N1 between April 2009 and April 2010. They estimate between 8,870 and 18,300 H1N1 related deaths.